This repo demonstrates the dangers of using ruby_xmalloc to allocation
memory inside a Ruby C extension. When ruby_xmalloc fails, it raises a
NoMemoryError exception which may be caught. This can leak memory.
Clone the repo and run ./runme.sh on Linux. This demo uses ulimit -v to
limit the amount of virtual memory applications can use. This doesn't work on
macOS.
Compiling
creating Makefile
linking shared-object memleak.so
Running without limits
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Memory allocation succeeded
Try: ulimit -v 102400
Running with limits
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